DistributionSpecMaxComputeTableSinkHashPartitioned.java

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package org.apache.doris.nereids.properties;

import org.apache.doris.nereids.trees.expressions.ExprId;

import java.util.List;

/** Hash MaxCompute partition values using the legacy Hive ScaleWriter behavior. */
public final class DistributionSpecMaxComputeTableSinkHashPartitioned
        extends DistributionSpecExternalTableSinkHashPartitioned {

    /** Create a MaxCompute ownership distribution from dynamic partition columns. */
    public DistributionSpecMaxComputeTableSinkHashPartitioned(List<ExprId> outputColumnExprIds) {
        super(outputColumnExprIds);
    }

    @Override
    public HashAlgorithm getHashAlgorithm() {
        return HashAlgorithm.DIRECT_HASH;
    }

    @Override
    public WriterAssignment getWriterAssignment() {
        // Keep the pre-refactoring behavior for external formats that have not yet defined
        // their own writer-ownership contract. Only Hive and Iceberg are modeled explicitly
        // in this phase.
        return WriterAssignment.SKEWED;
    }
}